Impact of stocking density and feeding regimen on broilers: performance, carcass traits and bone mineralisation

Şimşek, Ülkü Gülcihan; Çiftçi, Mehmet; Çerçi, İbrahim Halil; Bayraktar, Metin; Dalkiliç, Bestami; Arslan, O; Balcı, Tansel Ansal

doi:10.1080/09712119.2011.588394

Cited by 14 publications

(13 citation statements)

References 11 publications

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“…In the present study, tibia Ca and P contents were depressed in the high stocking density group, a fact that suggested the decreased tibia mineralization in this group, leading to a subsequent poor leg health. This was in contrast to previous studies in broilers (Kang, Park, Kim, & Kim, ; Simsek et al., ), where the bone mineral content was not influenced by stocking density. The different examined species might be the cause for this discrepancy.…”

Section: Discussioncontrasting

confidence: 99%

Effects of stocking density on growth performance, meat quality and tibia development of Pekin ducks

Zhang

Zhong

et al. 2018

Animal Science Journal

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This study was performed to investigate the effects of stocking density on performance, meat quality and tibia development in Pekin ducks reared on a plastic wire floor. A total of 372 healthy, 21-day-old, male ducks with similar body weight (BW) were randomly allotted to stocking densities of five (low), eight (medium) and 11 (high) birds/m . Each group had six replicates. Results showed that compared with the low density group, medium and high stocking density caused a decrease in final BW at 42 days old, and in average daily gain, European performance index (p < .01) and meat pH at 45 min postmortem (p < .001), and an increase of meat drip loss (p < .01). High stocking density resulted in an increase of feed/gain ratio (p < .001), but a decrease of tibia calcium (p < .01) and phosphorus content (p < .05). Meat color, shear force values, tibia size (weight, length, and width) and breaking strength were not significantly influenced by stocking density. In conclusion, stocking density over eight birds/m negatively affects growth performance, but meat quality and tibia development are not dramatically influenced. Based on this study, the stocking density of male Pekin ducks should be adjusted between five and eight birds/m .

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Section: Discussioncontrasting

confidence: 99%

Effects of stocking density on growth performance, meat quality and tibia development of Pekin ducks

Zhang

Zhong

et al. 2018

Animal Science Journal

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“…Carcass percentage and carcass component ratios were not affected by stocking density. These findings confirmed those of previous studies (Feddes et al, 2002;Simsek et al, 2011). In the present study, inclusion of LE and P in experimental diets did not significantly affect carcass, breast, thighs, abdominal fat, liver and gizzard per cent throughout the experimental period.…”

Section: Discussionsupporting

confidence: 93%

Response of broiler chickens reared at high density to dietary supplementation with licorice extract and probiotic

Rashidi

Ghorbani

Ahmad

et al. 2018

Animal Physiology Nutrition

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This study evaluated the effects of licorice extract and probiotic on performance, excreta characteristics and welfare‐related parameters of broiler chickens reared in high stocking density. Three hundred and thirty‐six 1‐day old broiler chicks (Ross 308) were used in a completely randomized design with five treatments and four replicates for 42 days. Treatments were as follows: (a) positive control (PC, 12 chicks/m2); (b) negative control (NC, 18 chicks/m2); (c) NC + 500 ppm licorice extract (LE); (d) NC + 200 ppm probiotic (P); (e) NC + ppm LE + ppm P. Body weight gain (BWG) was affected negatively by increased density in the growing period (p < 0.05). At high density, BWG was increased in the growing and whole period by adding LE and P separately and in combination (p < 0.01). Feed conversion ratio (FCR) was not affected by stocking density. Excreta weight (g/bird) and dry matter (DM, %) were reduced by increasing density (p < 0.01). Use of feed additives at high stocking density had no significant effect on excreta weight, but DM content of excreta was higher in NC + LE + P than NC. Gait problems and footpad and hock burns were increased by increased stocking density, but were not altered by feed additives. In conclusion, licorice extract and probiotic improved BWG of broilers reared at high stocking density; however, these birds had some disorders in footpad, hock and walking ability.

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“…In the 2000 report, a critical stocking density for growth depression was estimated around 30 kg/m2, but improved ventilation was suggested to alleviate this effect. Many authors have since reported decreasing growth rates with increasing density (e.g., (de Oliveira et al, 2000;Thomas et al, 2004;Dozier et al, 2005;Dozier et al, 2006;Sirri et al, 2007;Villagra et al, 2009;Beloor et al, 2010;Petek et al, 2010;Sekeroglu et al, 2011;Simsek et al, 2011;Zuowei et al, 2011;Benyi, 2012). The critical density for decreased growth indicated by these studies varied greatly, from as low as 17 kg/m2 (Thomas et al, 2004) to as high as 46 kg/m2 (Dawkins et al, 2004).…”

Section: Stocking Densitymentioning

confidence: 97%

“…Many authors have since reported decreasing growth rates with increasing density (e.g., (de Oliveira et al, 2000;Thomas et al, 2004;Dozier et al, 2005;Dozier et al, 2006;Sirri et al, 2007;Villagra et al, 2009;Beloor et al, 2010;Petek et al, 2010;Sekeroglu et al, 2011;Simsek et al, 2011;Zuowei et al, 2011;Benyi, 2012). Many authors have since reported decreasing growth rates with increasing density (e.g., (de Oliveira et al, 2000;Thomas et al, 2004;Dozier et al, 2005;Dozier et al, 2006;Sirri et al, 2007;Villagra et al, 2009;Beloor et al, 2010;Petek et al, 2010;Sekeroglu et al, 2011;Simsek et al, 2011;Zuowei et al, 2011;Benyi, 2012).…”

Section: Stocking Densitymentioning

confidence: 99%

Scientific report updating the EFSA opinions on the welfare of broilers and broiler breeders

Jong

Berg

Butterworth

et al. 2012

EFS3

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The EFSA AHAW panel is requested to develop several scientific opinions concerning animal based measures to assess the welfare of livestock animals. The main objective of this report is to review the broiler welfare literature to identify gaps and potential areas to strengthen and update three SCAHAW and EFSA opinions: i) The welfare of chickens kept for meat production (broilers) (SCAHAW, 2000), ii) Influence of genetic parameters on the welfare and resistance to stress of commercial broilers (EFSA, 2010), iii) Welfare aspects of the management and housing of the grand-parent and parent stocks raised and kept for breeding purposes (EFSA, 2010). The literature review was done by a group of authors and reviewers, under the supervision of an editorial team. A large number of new scientific references are quoted. Regarding the first and oldest opinion, this review presents 47 amended and new conclusions. In addition, it suggests twelve new recommendations and proposes a list of hazards. Especially the paragraphs on behavioural restriction, light, stocking density and environmental enrichment are updated with new information from a large number of new scientific references. Regarding the second opinion, nine new conclusions are proposed. Recommendations of the previous EFSA report are further supported by new information, and one new recommendation is a suggestion to further study the role of incubation conditions on welfare issues such as gait abnormalities, thermal discomfort and ascites. A limited number of new hazards are proposed. Regarding the third opinion, four new conclusions are proposed. Recommendations of the previous EFSA report are also in this case further supported by new information. One new recommendation is a suggestion to further study the impact of management on forced mating behaviour. A couple of new hazards are proposed.

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Impact of stocking density and feeding regimen on broilers: performance, carcass traits and bone mineralisation

Cited by 14 publications

References 11 publications

Effects of stocking density on growth performance, meat quality and tibia development of Pekin ducks

Effects of stocking density on growth performance, meat quality and tibia development of Pekin ducks

Response of broiler chickens reared at high density to dietary supplementation with licorice extract and probiotic

Scientific report updating the EFSA opinions on the welfare of broilers and broiler breeders

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